Journal
APPLIED SURFACE SCIENCE
Volume 313, Issue -, Pages 215-219Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2014.05.187
Keywords
Magnetoelectric; Nanocomposites; Dispersion; Surfactant; Large-scale applications
Categories
Funding
- FEDER through the COMPETE Program
- Portuguese Foundation for Science and Technology (FCT) [PEST-C/FIS/UI607/2011]
- project Matepro-Optimizing Materials and Processes [NORTE-07-0124-FEDER-000037]
- Programa Operacional Regional do Norte (ON.2-O Novo Norte), under the Quadro de Referencia Estrategico Nacional (QREN), through the Fundo Europeu de Desenvolvimento Regional (FEDER)
- FCT [PTDC/CTM-NAN/112574/2009, FCT-DFRH-SFRH/BPD/96227/2013]
- Basque Government
- Basque Government Industry Department under Project Actimat [IE13-380]
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Nanoparticle dispersion is assumed to be one of the key factors in composites performance and, in particular, for improving magnetoelectric (ME) coupling in polymer composites. To ensure a good dispersion, one of the most popular strategies is the use of surfactants, nevertheless in the case of magnetic nanoparticles-polymer composites, aspects such as the chemical and processing complexity, thermal stability, costs and health issues of such additives have severely constrained the development of upscaled applications of such composites. In this way, the dispersion of cobalt ferrite (CoFe2O4) nanoparticles in poly(vinylidene fluoride)-trifluorethylene, P(VDF-TrFE), matrix and its role in the piezoelectric, magnetic and magnetoelectric properties of the nanocomposite has been studied by preparing samples via two alternative dispersion routes: ultrasound and citric acid nanoparticle surfactation. No substantial differences have been detected in the ferroelectric, piezoelectric, magnetic and magnetoelectric response of samples prepared with and without surfactants, leading to a simplified large-scale production. (C) 2014 Elsevier B.V. All rights reserved.
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